Required special tool:
- Pocket flashlight and mirror.
- Calipers.
Prerequisite for verification
Note: Experience has shown that due to the greater amount of abrasive particles at the edge of the carriageway, the wear on the brake pads on the passenger side next to the driver is somewhat greater than on the driver's side. Therefore, it is advisable to carry out the test at the wheel on the passenger side next to the driver.
Safety instructions
There is a risk of accident when lifting the vehicle! You must first read the section «Vehicle lifting».
Mark the direction of rotation on the tire with an arrow. Loosen wheel bolts. Raise the car on the goats and remove the wheels. Attention: Be sure to read the instructions in the chapter «Removal and installation of a wheel».
Front wheel disc brake:
Using a vernier caliper, measure the pad thickness -a-, including the thickness of the metal support plate.
The brake linings of the front disc brakes have reached the wear limit if the thickness -a- of at least one of them, taking into account the thickness of the metal carrier plate, is only 7.0 mm. In this case, all four front axle brake pads replace.
Ensure the same direction of rotation of the tires, bolt the wheels, lower the vehicle and only then tighten the wheel bolts in a crosswise manner to 120 Nm.
Attention: Strictly follow the instructions given in chapter «Removal and installation of a wheel».
Note: Approximate wear of 1 mm of lining thickness corresponds to a vehicle mileage of at least 1000 km. This estimate is valid under unfavorable conditions. Brake linings usually last much longer. Thus, with a disc brake pad thickness of 10.0 mm (taking into account the thickness of the metal carrier plate) the remaining service life of the brake linings will correspond to a vehicle mileage of at least 3,000 km.
Rear wheel disc brake:
Check the thickness of the outer brake lining through the hole in the disc wheel, using a lantern if necessary. The wheel does not need to be removed. If equipped, remove the wheel cover.
Check the thickness of the inner lining using a flashlight and a mirror.
The brake linings of the rear disc brakes have reached the wear limit if the thickness -a- of at least one of them, taking into account the thickness of the metal carrier plate, is only 7.0 mm.
Rear wheel drum brake:
Remove the plug from the rear brake shield and shine a pocket torch into the hole -section in the figure-. The brake linings have reached the wear limit if the thickness -a- of at least one of them, excluding the thickness of the metal support plate, is only 2.5 mm.
If in doubt, remove the brake drum and measure the lining thickness.
When checking the thickness of the linings, at the same time make sure that there is no brake fluid or oil on them. If such contamination is found, the brake pads must be replaced immediately.
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